ID, go to PTS and click on Wolf Eyes Tactical Flashlights. Then go into the submenu "Accessories" which will list the Cree Led Bulbs. As for the 6M Explorer, it uses the D36 because it has the turbo head. Just look up the product description for it while you're perusing the site.
I see now that PTS has also listed the D36 (3.6v - 6v), but the mode sequence has changed to 100%, Strobe, 20%, & 2% for both the D26 & D36. However, Wolf Eyes still list the strobe at the end of the 2% sequence for the D26 digital. I wonder if the sequence was changed to best fit the use of LEOs?
The 2 mode versions (100% & strobe) are also listed.